216585368 has 16 divisors (see below), whose sum is σ = 407600160. Its totient is φ = 107892000.

The previous prime is 216585361. The next prime is 216585377. The reversal of 216585368 is 863585612.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216585361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47783 + ... + 52118.

It is an arithmetic number, because the mean of its divisors is an integer number (25475010).

Almost surely, 2^216585368 is an apocalyptic number.

It is an amenable number.

216585368 is a deficient number, since it is larger than the sum of its proper divisors (191014792).

216585368 is a wasteful number, since it uses less digits than its factorization.

216585368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100178 (or 100174 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 216585368 is about 14716.8396063829. The cubic root of 216585368 is about 600.5415185232.

The spelling of 216585368 in words is "two hundred sixteen million, five hundred eighty-five thousand, three hundred sixty-eight".